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#!/usr/bin/env ruby
# The "simple" way to "sync"
#
# Purpose
# Intended to be "simple" to use.
# It downloads the latest "loda-programs" repo and
# replaces the existing "loda-programs" dir.
#
# WARNING: This will destroy any local modifications to "loda-programs".
# Don't use this code if you have LODA programs that you want to keep.
# If you are just mining for LODA programs, then this approach is fine.
require_relative 'config'
LODA_PROGRAMS_OEIS = Config.instance.loda_programs_oeis
def git_fetch
Dir.chdir(LODA_PROGRAMS_OEIS) do
command = "git fetch"
output = `#{command}`
output.strip!
if output.length > 0
puts "output from command: #{command}"
puts output
end
end
end
def git_latest_commit_id_of_remote_repo
Dir.chdir(LODA_PROGRAMS_OEIS) do
command = "git ls-remote origin HEAD"
output = `#{command}`
output.strip!
# extract from the string "7a68a9faec4f0dd7c31a70676dcac3fcb942ed75 HEAD"
# this commit_id "7a68a9faec4f0dd7c31a70676dcac3fcb942ed75"
if output =~ /\b([0-9a-fA-F]{14,})\b/
return $1
end
puts "error: no commit_id found in command output"
puts "output from command: #{command}"
puts output
raise "no commit_id found in command output"
end
raise "could not chdir"
end
def git_current_commit_id_of_local_repo
Dir.chdir(LODA_PROGRAMS_OEIS) do
command = "git rev-parse HEAD"
output = `#{command}`
output.strip!
# extract commit_id from the output "7a68a9faec4f0dd7c31a70676dcac3fcb942ed75"
if output =~ /\b([0-9a-fA-F]{14,})\b/
return $1
end
puts "error: no commit_id found in command output"
puts "output from command: #{command}"
puts output
raise "no commit_id found in command output"
end
raise "could not chdir"
end
def determine_is_uptodate
commit_id_remote = git_latest_commit_id_of_remote_repo
puts "remote commit_id: #{commit_id_remote}"
commit_id_local = git_current_commit_id_of_local_repo
puts "local commit_id: #{commit_id_local}"
is_same = commit_id_remote == commit_id_local
puts "is_same_commit_id: #{is_same}"
is_same
end
def determine_has_uncommited_changes
Dir.chdir(LODA_PROGRAMS_OEIS) do
command = "git status --porcelain"
output = `#{command}`
output.strip!
if output.length == 0
# no output when there isn't anything changed
return false
end
# outputs 1 or more lines with the files that have been changed
return true
end
raise "could not chdir"
end
# Remove untracked files from the working tree
def git_clean
Dir.chdir(LODA_PROGRAMS_OEIS) do
command = "git clean -fdx"
output = `#{command}`
output.strip!
if output.length > 0
puts "output from command: #{command}"
puts output
end
end
end
def git_reset_hard
Dir.chdir(LODA_PROGRAMS_OEIS) do
command = "git reset --hard origin/main"
output = `#{command}`
output.strip!
if output.length > 0
puts "output from command: #{command}"
puts output
end
end
end
def git_checkout_main_branch
Dir.chdir(LODA_PROGRAMS_OEIS) do
command = "git checkout main"
output = `#{command}`
output.strip!
if output.length > 0
puts "output from command: #{command}"
puts output
end
end
end
def git_pull
Dir.chdir(LODA_PROGRAMS_OEIS) do
command = "git pull"
output = `#{command}`
output.strip!
if output.length > 0
puts "output from command: #{command}"
puts output
end
end
end
def main
git_fetch
is_uptodate = determine_is_uptodate
has_uncommited_changes = determine_has_uncommited_changes
is_fully_in_sync = is_uptodate && !has_uncommited_changes
puts "is_fully_in_sync: #{is_fully_in_sync} is_uptodate: #{is_uptodate} is_fully_in_sync: #{is_fully_in_sync}"
if is_fully_in_sync
puts "Already up to date. No changes to the official loda-programs repo."
puts "status: nochange"
return
end
puts "Obtaining the latest snapshot of the official loda-programs repo."
git_clean
git_reset_hard
git_checkout_main_branch
git_pull
puts "The local repo is now uptodate."
puts "status: changed"
end
main
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